Reconstruction of subsurface radio holograms fully and partially measured by different methods

Черепенин, В. А.; Zhuravlev, Andrey; Chizh, Margarita; Кокошкин, А. В.; Korotkov, V. A.; Korotkov, K. V.; Новичихин, Е. П.

doi:10.1134/s1064226917070038

Cited by 4 publications

(1 citation statement)

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“…As test we use aerospace images taken from publicly available Internet resources. There are a large number of methods for determining the distorting hardware function from the original image and methods of "blind" deconvolution [1,[22][23][24][25][26], but any inaccuracy in determining the HF parameters will inevitably lead to a deterioration in the quality of reconstruction. Therefore, in order to eliminate additional interfering factors, this work assumes that the hardware functions are accurately known.…”

Section: Basic Assumptionsmentioning

confidence: 99%

Restoring Missing Fragments of a Distorted Image Due to Defocusing or Blur of a Known Hardware Function

Кокошкин¹,

Новичихин²

2020

RENSIT

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In this paper, a comparative analysis of the methods for recovering images distorted by defocusing or blurring from incomplete data is performed using examples. Incomplete data means the absence of any image fragments that were retouched using different types of interpolation - linear, spline and the interpolation method for the sequential calculation of the Fourier spectrum (IMSCS) developed by us. Then, the famous deconvolution method, the Wiener Filter (WF), was applied to the entire image. Analysis of the quality of restoration, carried out on the example of aerospace images, suggests that using IMSCS to fill in missing fragments (gaps) is either preferred or no less competitive than alternative methods. This is a consequence of the fact that IMSCS does not just retouch the gap, but also tries to reconstruct the lost data.

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Section: Basic Assumptionsmentioning

confidence: 99%